The lawyer did so, and thus became possessed of a faithful report of Saltars' communications to Eva which she had detailed for Allen's benefit. On ending he placed the letter on the table. "A blue pocket-book," said Mask musingly. "Yes, he had such a one. I remember he placed the notes in it. I wonder I didn't ask about that at the inquest. It's stolen. Humph! Looks like a commonplace robbery after all. Allen," he raised his eyes, "I gave Strode two hundred in ten pound Bank of England notes. As I have the numbers, I may be able to trace how much of this sum has been spent by inquiring at the Bank. The numbers that are missing will be those that Strode had in the blue pocket-book when he went on that fatal journey to Westhaven. If the murderer stole the book and has cashed the notes he may be traced by the numbers." "I agree. But what about the forty thousand pounds?" Mask shook his head. "I can't say. Strode certainly never mentioned to me that he had such a sum." "Did he say he had diamonds?" "No. Perhaps, as Miss Strode suggests, the forty thousand pounds may have been locked up in diamonds as a portable way to carry such a sum. But we found no diamonds amongst his effects, so it is probable he carried them on his person." "And was murdered for the sake of them?" "Perhaps. It was strange, though, that Strode should have spoken to me about his wooden hand. He promised that he would return from Wargrove to place a large sum of money in my hands--probably the forty thousand pounds, though he did not mention the amount." "I dare say he intended to turn the diamonds into money and then give it to you." "Perhaps," said Mask carelessly, "but we are not yet sure if the money was in diamonds. However, Strode said, that when he wanted the promised money, he would get it from me personally, and, if he did not apply in person, he would send the wooden hand. As he certainly would not have let the hand be taken from him while alive, it was a very safe token to send." Allen looked down. "It seems as though he was afraid of being killed," he said musingly; "and he was killed, and the wooden hand was stolen." "Not only that," said Mask, "but it was brought to me." "What!" Allen started to his feet, "here! Why didn't you have the man who brought it arrested?" "Because I could not," said Mask drily; "this is why I told you of my habits. It was after four when Johnstone and every one in the place was away. In fact, it was nearly six, and when I was getting ready to go, that this man came." "What kind of a man was he?" "A venerable old man, who looked like the Wandering Jew, with a long white beard, and a benevolent face. He asked if he could speak to me, and we talked. I must remind you that every one in this building is away at the hour of six." "I understand. But what was the old man's name?"